ack-ack definition

  • noun:
    • Slang An antiaircraft firearm.
    • Slang Antiaircraft fire.
    • Antiaircraft artillery.
    • Antiaircraft fire
    • Artillery designed to shoot up at airplanes; antiaircraft artillery.
    • artillery made to take up at airplanes
  • adjective:
    • Of or relating to antiaircraft warfare.

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